Polaris PVCR-0726W 14.8V Cordless Vacuum Replacement Battery

Polaris PVCR-0726W / PVCR-0826 / PVCR-0926W / PVCR-0930 — 14.8V Li-ion Replacement Battery

This is a 14.8V 3400mAh (50.32Wh) lithium-ion battery pack for the Polaris PVCR-0726W, PVCR-0826, PVCR-0926W, PVCR-0930, and two additional models in the same series. It replaces the original pack when capacity has dropped to the point where the vacuum can no longer complete a cleaning run. Voltage and connector match the OEM specification.

• PVCR series compatibility: These models share a common 14.8V power rail, battery housing form factor, and BMS handshake protocol. Swapping between them is straightforward because the charging circuit on each unit expects the same cell configuration — four Li-ion cells in series delivering a nominal 14.8V.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the PVCR platform. The BMS engaged protection correctly at low-voltage cutoff and released cleanly on charge reconnection. No false overcurrent trips were recorded during simulated high-suction motor load.
• Dock charging on the PVCR series: Do not leave the vacuum sitting on the charging dock permanently. These units do not cut dock power once the pack hits 100%. Continuous trickle current accelerates cell degradation faster on this vacuum than on most cordless tools. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low on the PVCR-0726W

This happens when the motor draws higher current than rated — usually because the filter is partially blocked. The BMS reads the surge as an approaching low-voltage threshold and begins throttling output before the indicator LED registers it. The vacuum feels like it's losing charge early, but the real cause is restricted airflow forcing the motor to work harder. Clear the filter and check the dust container before assuming the battery is the problem.

Motor cuts out mid-use then recovers after a few seconds

This is a BMS overcurrent trip, not a dead battery. When suction is sustained against a blockage — carpet pile, a clogged nozzle, or a full dust container — current draw spikes past the pack's protection threshold. The BMS disconnects the output to protect the cells, then resets once current demand drops. Clear the blockage first. If the cutout keeps happening on an unobstructed surface, check that the filter has been cleaned within the last three uses and confirm pack voltage reads at least 16.4V on a full charge.